The Powerbag is a backpack, a sling, a tablet bag and a portable charging station for your mobile devices. The convertible bag is also roomy enough to carry your books, clothes and other personal items.
Inside the Powerbag is a 3000mAh or a 6000mAh battery that can charge four devices at once using the included microUSB, miniUSB and Apple charging cable. The $US139 Powerbag is slated to arrive in October at major retailers. [Powerbag via ChipChick]